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(Model.)

J. TRAMMELL & A-. H. SLAUGHTER. 4

SPARK ARRESTER.

Patented Mar. 7,1882.

UNITED STATES PATENT OFFICE.

JOHN W. TRAMMELL AND ALFRED H. SLAUGHTER, OF OPELIKA, ALA.

SPARK-ARRESTER.

SPECIFICATION forming part of Letters Patent No. 254,730, dated March'7, I882.

' Applicationfiled July 19, 1881. (Modehl To all whom it may concern:

Be it known that we, JOHN W. TRAMMELL and ALFRED H. SLAUGHTER, ofOpelika, in the county of Lee, and in the State of Alabama, haveinvented certain new and useful Improvements in Spark-Arresters; and wedo hereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the accompanying'drawings,and to the letters of. reference marked thereon, making a part of thisspecification.

This invention relates to certain improvements in spark-arresters forlocomotives; and it has for its objects to provide an improved means fordiverting the sparks, smoke, and cinders from their usual course out ofthe smokestack or funnel and discharging them at the rear of thelocomotive or train. These objects we attain by the apparatus anddevices illus- 'funnel or smoke-stack. Fig. 3 represents a top view ofthe funnel with the top removed.

Fig. 4 represents a view of the top of the fun-- nel or stack detached,and Fig. 5 represents a detached view of a section of the pipe and oneof the air-funnels.

The letter A indicates the locomotive, and B the smoke-stack or funnel.The said funnel is provided on the inside of the enlarged upper portionwith a deflector, 0, between which and the outer wall of the funnel isan annular flue, D, for the escape of the smoke, cinders, and sparks.

The letter F indicates a segmental deflector, formingaportion ofthefront wallof the smokestack or funnel, and G a rear deflector, aspace, H,at each side.beingleft between the two for the en trance ofair. From said deflector G extends backward a tube, I, mounted onsuitable supports attached to the locomotive. The said tube, at suitableintervals, is provided with reversely-set air-funnels K, and isperforated, as indicated by the letter L, whereby a current of air maybe taken into the pipe as the locomotive moves in eitherdirection.Similar tubes are located on the cars, and are connected by means offlexible tubes of suitable construction.

The letter M indicates the top of the smokestack or funnel, which isprovided with an opening, N, for the escape of smoke, and a slidingvalve, 0, by means of which the escape of smoke may be regulated orcaused to pass backward through the tube. The said valve connects with alever, P, provided with a rod, R, extending back into the cab, so thatthe engineer may operate the valve.

The operation of our invention will be apparent. The valve being closed,or partially closed, the smoke, cinders, and sparks are diverted andpassed back into the tube and are carried by the draft of air throughthe same out of the rear.

Having described our invention, what we claim, and desire to secure byLetters Patent, 1s

.1. In combination with the smoke-stack,provided with asuitable top andvalve, theinner, forward, and rear deflectors, adapted to operatesubstantially in the manner specified.

2. In combination with the smoke-stack and deflectors, constructed asshown and described, the tube extending to the rear and provided withreversely-set air-funnels and apertures for the admission of air,substantially as and for the purpose set forth.

In testimony whereof we affix our signatures, in presence of twowitnesses, this 4th day of July, 1881.

JOHN W. TRAMMELL.

. A. H. SLAUGHTER.

Witnesses:

B. F. PONDER, GEo. W. GUNN.

